its my first grow i will try more after but it's just for me and my girlfriends heads i also tryed 1 just to get the hang of it and im using a 400 watt hps it's also a 400 watt mh a have 1 vent blowing in cold air and the hot air goes out the bottom of my door. and using advanced nutrients mother earth super tea bloom, carbo load,and bud blood witch is used only in the 1 week of flowering and i have big bug used in week 2. after that i will use just the bloom and carbo load. heres some pic's